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Conference Paper: A novel method of Doppler shift estimation for OFDM systems

TitleA novel method of Doppler shift estimation for OFDM systems
Authors
Zhou, WLam, WH
Issue Date2008
Citation
Proceedings - Ieee Military Communications Conference Milcom, 2008 How to Cite?
DOI: http://dx.doi.org/10.1109/MILCOM.2008.4753538
AbstractDoppler shift estimation has been deployed to improve the performance of Orthogonal Frequency Division Multiplexing (OFDM) systems. A novel method of Doppler shift estimation for OFDM systems in time varying and frequency selective fading channels has been proposed and investigated. The proposed method is a frequency domain scheme that utilizes pilot subcarriers, which are adopted in most practical OFDM systems. An equation consisting of the Doppler shift has been derived from the ratio of two autocorrelation sample points at the receiver so that the Doppler shift estimation can be retrieved. Since the computation for solving the equation is formidable, the proposed algorithm has also been further simplified by using the optimal polynomial approximation to the zero order Bessel function of the first kind. Computer simulation demonstrates that the proposed algorithm can estimate the Doppler shift accurately within a wide range of Doppler shift. ©2008 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/158573
References
References in Scopus

 

DC FieldValueLanguage
dc.contributor.authorZhou, Wen_US
dc.contributor.authorLam, WHen_US
dc.date.accessioned2012-08-08T09:00:19Z-
dc.date.available2012-08-08T09:00:19Z-
dc.date.issued2008en_US
dc.identifier.citationProceedings - Ieee Military Communications Conference Milcom, 2008en_US
dc.identifier.urihttp://hdl.handle.net/10722/158573-
dc.description.abstractDoppler shift estimation has been deployed to improve the performance of Orthogonal Frequency Division Multiplexing (OFDM) systems. A novel method of Doppler shift estimation for OFDM systems in time varying and frequency selective fading channels has been proposed and investigated. The proposed method is a frequency domain scheme that utilizes pilot subcarriers, which are adopted in most practical OFDM systems. An equation consisting of the Doppler shift has been derived from the ratio of two autocorrelation sample points at the receiver so that the Doppler shift estimation can be retrieved. Since the computation for solving the equation is formidable, the proposed algorithm has also been further simplified by using the optimal polynomial approximation to the zero order Bessel function of the first kind. Computer simulation demonstrates that the proposed algorithm can estimate the Doppler shift accurately within a wide range of Doppler shift. ©2008 IEEE.en_US
dc.languageengen_US
dc.relation.ispartofProceedings - IEEE Military Communications Conference MILCOMen_US
dc.titleA novel method of Doppler shift estimation for OFDM systemsen_US
dc.typeConference_Paperen_US
dc.identifier.emailLam, WH:whlam@eee.hku.hken_US
dc.identifier.authorityLam, WH=rp00136en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/MILCOM.2008.4753538en_US
dc.identifier.scopuseid_2-s2.0-62349141678en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-62349141678&selection=ref&src=s&origin=recordpageen_US
dc.identifier.scopusauthoridZhou, W=35312980700en_US
dc.identifier.scopusauthoridLam, WH=7203021916en_US

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